Sample Space

Question

Let A and B be events in sample space S such that P(A)=.6, P(B)=.5 and P(A intersection B)=.3

 

Find P(A/B) and P(B/A)

Answer 1

P(A|B) = P(A and B) / P(B) = 0.3 / 0.5 = 0.6

 

P(B|A) = P(B and A) / P(A) = 0.3 / 0.6 = 0.5